Unicorn doesn't pick changes after deployment. Hard restart. (Rails, Nginx, Unicorn & Capistrano)

hard-restart-unicorn-nginx-rails-capistrano.sh

#-- local machine

$ cap production unicorn:stop
$ cap production nginx:stop
$ ssh deployer@example.com

#-- server

$ rm ~/apps/:app_name/current/tmp/pids/unicorn.*
$ rm /tmp/unicorn.:app_name.sock

# Helpful when code chagnes don't reflect after cap deploy.
# Old unicorn processes keep serving previous version.
$ ps aux | grep 'unicorn' | awk '{print $2}' | xargs sudo kill -9

#-- local machine

$ cap production unicorn:start
$ cap production nginx:start